a positive turn in the fiscal cliff crisis. house republicans agree to meet sunday night to resume talks after a day of finger-pointing and complaining in washington. on wall street, fiscal fears created whiplash for investors: a big stock market sell-off and then bounce back on word that lawmakers are springing back into action. and, if you used your smartphone to shop this christmas, you're in fashion. it was the year's top retail trend. we have that and more tonight on "n.b.r."! a dramatic cliff-hanger today between washington and wall street about the fiscal cliff. stocks initially sold off after senate majority leader harry